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220 results on '"Song, Yawei"'

25. DNA Damage Atlas: an atlas of DNA damage and repair

Author

Liang, Yu, primary, Yuan, Qingqing, additional, Zheng, Qijie, additional, Mei, Zilv, additional, Song, Yawei, additional, Yan, Huan, additional, Yang, Jiajie, additional, Wu, Shuheng, additional, Yuan, Jiao, additional, and Wu, Wei, additional

Published
2023
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26. Community Outreach and Engagement at U.S. Cancer Centers: Notes from the Third Cancer Center Community Impact Forum

Author

Leader, Amy E., primary, Brandt, Heather M., additional, Briant, Katherine J., additional, Curry, Gina, additional, Ellis, Kiara, additional, Gonzalez, Evelyn T., additional, Guerra, Carmen E., additional, Harding, Garrett, additional, Hull, Pamela C., additional, Israel, Aimee, additional, Mellilo, Rebecca, additional, Mesia, Rachel J., additional, Schiffelbein, Jenna E., additional, Song, Yawei, additional, Surani, Zul, additional, Tiro, Jasmin A., additional, Vadaparampil, Susan T., additional, Vanderpool, Robin C., additional, and Paskett, Electra D., additional

Published
2023
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37. Research on effective drainage radius and rational borehole spacing of parallel boreholes

Author

SANG Naiwen, YANG Shengqiang, and SONG Yawei

Subjects
coal mining, gas drainage, parallel borehole drainage, effective drainage radius, drainage superposition effect, borehole spacing, Mining engineering. Metallurgy, TN1-997
Abstract

In order to determine rational borehole spacing of parallel boreholes for gas drainage, a fluid-solid coupling model of gas drainage was established by deducing gas migration equation of coal seam, deformation equation of coal and rock, and coupling equation of seepage field and stress field. According to actual geological conditions of 21219 working face in a mine, variation law of gas pressure and effective drainage radius under influence of drainage superposition effect between parallel boreholes were numerically simulated by COMSOL Multiphysics software, and rational borehole spacing was obtained by combining with effective drainage radius of borehole. The numerical simulation results show that gas pressure of coal body after drainage increases with the increase of borehole spacing. As the distance between coal body and borehole decreases, gas pressure of coal body decreases slowly at first and then decreases rapidly. With the increase of drainage time, gas pressure decreases continuously and effective drainage radius increases. The field application results verify rationality of borehole spacing arrangement.

Published
2019
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39. Target plot-to-track association method in Doppler blind zone based on multi-dimension assignment.

Author

HAN Wei, WANG Guoshi, YAN Kai, and SONG Yawei

Subjects
COST functions, RADAR in aeronautics, ASSIGNMENT problems (Programming), RADAR
Abstract

The inherent Doppler blind zone (DBZ) of airborne early warning radar can bring out target track termination with the worse effect in multi-target and clutter environment. Based on two-dimension assignment algorithm with DBZ information, a new plot-to-track association method based on multi-dimension assignment algorithm is proposed. Firstly, the evolution information of target track is used enough, and the radar's continuous multi-frame measurement data are used to perform sliding window processing. Secondly, the cost function of multi-dimension assignment is constructed. Finally, the solution of function on the condition of minimal cost is used as the targets plot-to-track assignment solution. The simulation results show that this method has further descent of track termination rate compared with two-dimension assignment algorithm in multi-target and clutter environment with DBZ. [ABSTRACT FROM AUTHOR]

Published
2023
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46. Study on the improvement of supercooling and thermal properties of erythritol-based phase change energy storage materials

Author

Yang Bin, Liu Jiemei, Song Yawei, and Wang Ning

Subjects
Materials science, 060102 archaeology, Renewable Energy, Sustainability and the Environment, 020209 energy, Analytical chemistry, Nanoparticle, 06 humanities and the arts, 02 engineering and technology, Phase-change material, Degree (temperature), law.invention, Nanofluid, law, 0202 electrical engineering, electronic engineering, information engineering, Particle, 0601 history and archaeology, Ultrasonic sensor, Crystallization, Supercooling
Abstract

Ultrasound and nanoparticles are used to control the supercooling degree of the erythritol-based phase change material. The effects of particle type, ultrasonic power and initial ultrasonic temperature on the crystallization supercooling degree (SD), crystallization progress and supercooling instability of nanofluids are investigated. Meanwhile, the preparation scheme of nanofluids that satisfy both high-quality thermal performance and economic value is explored. The results show that when the particle concentrations are 0.05%, 0.1%, 0.2% and 0.3%, respectively, the SD of the nanofluids added with C decreased by 27.34%, 27.16%, 22.52% and 12.90% (24.39%, 19.91%, 5.49% and 1.22%), respectively, compared with those added with Cu (ZnO) at the same concentration. High-quality nanofluids can be obtained when the addition amounts of C, Cu, and ZnO are 0.1%, 0.3%, and 0.2%, respectively. A nanofluid with good crystallization effect can be obtained when high (low) concentration of nanoparticles is introduced and high (low) power of ultrasound is input. At the initial ultrasonic temperatures of 130 °C, 120 °C, 110 °C and 100 °C, the crystallization effect of the fluid would be worse after adding nanoparticles. With the ultrasonic power of 150W, ultrasonic time of 30 min and particle concentration of 0.5%, ET nanofluids with the best thermal property and optimal sample in economy can be produced.

Published
2021

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